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[en] We study how the cross sections for q anti q→2π and ππ→ππ behave as a function of the c.m. energy √s and the temperature T, in particular in the region of the chiral phase transition. We restrict to zero baryon density, which is the relevant situation for the central rapidity region of ultrarelativistic heavy ion collisions. For the description of the quark dynamics and mesons bound states in the nonperturbative regime, the model of Nambu-Jona-Lasinio is used on the quark level. (orig.)
Source
Feldmeier, H. (ed.) (Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)); Noerenberg, W. (ed.) (Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany); Technische Hochschule Darmstadt (Germany)); Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany); 392 p; ISSN 0720-8715; 
; 1995; p. 367-372; 23. international workshop on gross properties of nuclei and nuclear excitations: Dynamical properties of hadrons in nuclear matter; Hirschegg (Austria); 16-21 Jan 1995
; 1995; p. 367-372; 23. international workshop on gross properties of nuclei and nuclear excitations: Dynamical properties of hadrons in nuclear matter; Hirschegg (Austria); 16-21 Jan 1995